Blue Sea Systems Products: Precision and Reliability in Marine Electrical Components
Whether it's a surface-mounted power distribution panel or a common busbar, their products are designed with precision and reliability in mind. The A-series toggle switches, ANL and ATC fuses, ML-ACR and M-Series Mini relays, and specialty M2 OLED digital displays are just a few examples of their diverse product range catering to various marine needs.With features like ignition protection, high amperage capacity, and fast-charging capabilities, Blue Sea Systems ensures that their products meet the stringent requirements of specialty vehicle industries and marine applications. Their commitment to product quality and reliability makes them a trusted choice for power distribution panels and other electrical components in the boating industry.
Fast deliveries of yacht equipment, calculation, selection of analogues and spare parts. Send us your request and we will contact you ASAP with a solution. We deliver in Cyprus, throughout Europe and worldwide. More than 10 years of experience.
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1-2 weeks delivery time The Blue Sea 5007100 Class T Fuse Block supports Class T fuses rated 110–200A with maximum system voltage 160V DC and cable capacity up to 4/0 AWG. It features tin-plated copper fuse blocks, stainless steel 1/4"-20 (M6) studs, 72 in-lb (8.13 Nm) torque rating, insulating cover with multi-direction breakouts, UL94-V0 heat-resistant base, and ignition protection. Mounting uses 1/4" or M6 hardware. Weight: 1.10 lb (0.5 kg). |
$ 82.14
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1-2 weeks delivery time The Blue Sea 7748 SafetyHub 150 Fuse Block is an ignition-protected 10-circuit fuse block with screw termination and integrated negative bus, designed for gasoline and diesel boats. It accepts 4 AMI®/MIDI® fuses up to 200A and 6 ATO®/ATC® fuses up to 30A. Operating voltage 12/24/32V. Combined current up to 600A with 2×4/0 cable (50°C ambient). M8 studs, IP66 sealed cover. Weight 3.50 lb (1.59 kg). |
$ 232.13
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1-2 weeks delivery time The Blue Sea 1045 is a dual USB charger for 12V and 24V DC systems, delivering up to 4.8A total output with intelligent device recognition for fast, device-optimized charging. It mounts in a standard 1-1/8" panel cutout, features internal filtering to reduce electronic interference, and is fully potted for reliable operation in harsh marine environments. IP45 protection is provided when the protective dust cap is closed. |
$ 76.84
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1-2 weeks delivery time The Blue Sea 7052 Push Button Reset Only Circuit Breaker is a 5A thermal branch breaker for DC systems up to 32V, designed for panel mounting with 3/8-27 UNS thread and 1/4" male quick connect terminals. It features manual push-button reset, trip-free protection, and compact construction for high-density layouts. Interrupt capacity is 3000A @ 14.7V and 2500A @ 28V, operating temperature -10°C to +60°C, and the unit is ignition protected for gasoline engine compartments. |
$ 10.66
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1-2 weeks delivery time The Blue Sea 7703 ML Solenoid is a 24V DC bi-stable magnetic latching solenoid rated 500A continuous for engine, inverter, house loads, and emergency battery combine circuits. It provides switching under load without manual control, draws 0A in ON/OFF state, and only consumes current during switching. Features 3/8"-16 tin-plated copper studs with 22.23 mm length, supports 2x (4/0) cables, and is rated 500A continuous, 700A for 5 minutes, 1000A for 30 seconds. Operating range −10°C to +60°C. Weight 2.07 lb (0.94 kg). Includes SPDT Contura switch 2145. ABYC C-7, CE, IP66, ISO 8846, SAE J1171. |
$ 380.57
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1-2 weeks delivery time The Blue Sea 8127 AC Panel (European version) provides one double pole AC main breaker and 6 branch circuit positions for 230V AC systems. It is fully pre-wired with hot, neutral, and safety ground buses and includes backlit circuit label positions and ON indicator LEDs in all circuits. The panel features a red reverse polarity LED. Panel dimensions are 7.50 × 5.25 in (190.5 × 133.35 mm). Weight is 1.87 lb (0.85 kg). Supplied with a 16A double pole main breaker, three 8A single pole branch breakers, AC label set, and 230V indicator LEDs. |
$ 463.62
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1-2 weeks delivery time The Blue Sea 7040 187-Series Circuit Breaker is a 60A panel-mount, Type III trip-free breaker that combines switching and circuit protection for DC systems up to 48V. It uses a thermally responsive bi-metal blade, features IP66 waterproof and ignition-protected construction, and is equipped with 5/16"-18 (M8) terminals with 75 in-lb (8.47 Nm) torque. Interrupt capacity is 5000A @ 14VDC, 3000A @ 28VDC, and 1500A @ 48VDC, with an operating temperature range of -40°C to +85°C. |
$ 152.60
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1-2 weeks delivery time The Blue Sea 1821 is a universal high-temperature sensor designed for monitoring raw water exhaust temperatures without drilling holes. It straps directly to the outside of the exhaust pipe, supports multiple mounting options, and is compatible with all Blue Sea Systems products that require a temperature sensor. |
$ 32.52
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Blue Sea 7225 – A-Series Red Toggle Circuit Breaker, Single Pole, 40A, Magnetic Hydraulic, Trip Free
1-2 weeks delivery time The Blue Sea 7225 A-Series circuit breaker is a single-pole, 40A magnetic hydraulic toggle breaker for AC and DC electrical panels. It combines switching and circuit protection in one device and features a trip-free design that cannot be held ON during a fault condition. Rated for 240V AC and 65V DC, with red toggle actuator, stainless steel mounting and terminal screws, 10,000 switching cycles, and operating temperature range from −40°C to +85°C. Meets ABYC standards and is certified CE, CSA, TUV, and UL 1077. |
$ 35.96
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1-2 weeks delivery time The Blue Sea 5191 MRBF Terminal Fuse Block is a compact high-amp fuse block designed for tight installations requiring DC main, inverter, windlass, and bow thruster circuit protection using MRBF fuses from 30A to 300A (fuse sold separately). It supports up to 300A and 58V DC, uses an isolated stud design with standard M8 (5/16") hardware to allow terminal stacking, includes an insulating cap to help prevent accidental shorts, accepts 5/16" ring terminals, and mounts on 3/8" terminal studs. Maximum torque is 75 in-lb (8.47 Nm) and weight is 0.16 lb (0.07 kg). |
$ 51.64
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1-2 weeks delivery time The Blue Sea 4302 WeatherDeck® Fuse Panel is a 12V DC waterproof fuse panel with 2 circuits for flybridge and open cockpit installations. The panel front is IP67 rated when properly mounted and supports immersion up to 1 meter for 30 minutes. It uses integrated ATO/ATC fuses with bicolored LED circuit status indication and an independent label backlighting circuit for remote switching and dimming. Electrical rating is 15A per circuit at 12V DC, with a total panel rating of 30A. |
$ 116.07
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1-2 weeks delivery time The Blue Sea Dual PowerPost 2016 is a dual-stud termination post featuring two 5/16"-18 stainless steel studs, rated for 48 V DC, with a recommended stud torque of 120 in-lb (13.56 Nm). It mounts using #10 (M5) screws and is supplied with one red and one black insulator for polarity identification. |
$ 38.14
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1-2 weeks delivery time The Blue Sea 7622 ML-ACR is a 12V DC magnetic latching Automatic Charging Relay rated 500A continuous, 700A (5 min), and 1450A cranking, designed to automatically combine and isolate two battery banks during charge, discharge, and engine start. It features dual sensing, start isolation, engine isolation, start assist, and integrated manual control with LOCK OFF capability. Built with 3/8"-16 (M10) tinned copper studs (1.50" length), supports 4/0 AWG x2 cable, switching cycles 100,000, operating range −10°C to +60°C, and includes Remote Control Contura Switch PN 2146. |
$ 470.97
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1-2 weeks delivery time The Blue Sea 8359 AC Rotary Switch Panel is a 2-pole selector panel rated at 30A for 230V AC systems, designed to switch between two AC sources with an OFF position. It provides a compact transfer solution where circuit protection is installed elsewhere. The panel includes a 9009 heavy duty industrial rated rotary switch and AC rotary panel labels, features reverse polarity and power available LED indicators, and is built from heavy 1/8" aluminum 5052 alloy with a two-part polyurethane slate gray finish. Dimensions are 3.75 × 5.25 × 1.91 in and weight is 0.65 lb (0.29 kg). |
$ 451.16
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1-2 weeks delivery time The Blue Sea 5005 is an ANL fuse block for 12–32V DC systems, designed to accept ANL fuses rated from 35A to 300A (fuse sold separately). It features a swing-out design for fuse replacement without removing fasteners, 5/16" (M8) stainless steel studs, and an insulating cover that meets ABYC and USCG requirements with multi-directional wire access. |
$ 46.72
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1-2 weeks delivery time The Blue Sea 5119 Class T Fuse (300A) is built for extremely fast short-circuit response and high fault protection with a 20,000A interrupt capacity (AIC). It is rated 300A up to 125V DC, uses a 3/8" stud (Stud Size 190), and provides 20,000A @ 125V DC interrupt capacity. The fuse weighs 0.30 lb (0.14 kg) and works with the 5502 and 5502100 Class T Fuse Block with Insulating Cover (225 to 400A). It is UL listed to standard 248-15. |
$ 86.10
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1-2 weeks delivery time The Blue Sea 7044 187-Series Circuit Breaker is a 100A panel-mount, Type III trip-free breaker for DC systems up to 48V, combining manual switching and circuit protection in a single device. It uses a thermally responsive bi-metal blade, features IP66 waterproof and ignition-protected construction, and includes 5/16"-18 (M8) terminal studs with 75 in-lb (8.47 Nm) torque. Interrupt capacity is 5000A @ 14VDC, 3000A @ 28VDC, and 1500A @ 48VDC, with an operating temperature range of -40°C to +85°C. |
$ 152.60
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1-2 weeks delivery time The Blue Sea 7187 285-Series Circuit Breaker is a 100A surface-mount Type III breaker for DC systems up to 48V, combining manual switching and circuit protection in one device. It is a drop-in replacement for 185-Series breakers and uses a thermally responsive bi-metal blade with a visible reset lever to show trip status. The unit features trip-free operation, M6 terminal studs for 1/4" ring terminals, and is ignition protected and IP67 weather resistant. Operating range: -40°C to +85°C. Weight: 0.50 lb (0.23 kg). |
$ 94.93
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What are the primary components of marine electrical systems, and how do they contribute to the functionality of a boat?
Marine electrical systems consist of several key components that are essential for the functionality of a boat. These components include fuse blocks, circuit breaker panels, toggle switches, terminal blocks, and busbars, among others. Fuse blocks and heavy duty circuit breaker panels provide crucial circuit protection, ensuring that electrical circuits are safeguarded against overloads and short circuits. Toggle switches and terminal blocks facilitate the operation and connection of various electrical devices and systems onboard, while busbars enable efficient power distribution throughout the vessel. Innovative electrical systems, such as those offered by Blue Sea Systems, are engineered to withstand marine conditions, providing water resistance and durability. These components collectively contribute to reliable power distribution, efficient circuit protection, and overall electrical system performance, ensuring the safety and functionality of the boat.
In addition to these essential components, marine electrical systems may also include specialized equipment like switch panels and battery chargers. A 12-circuit switch panel allows for convenient control over multiple electrical circuits, while heavy-duty battery chargers ensure efficient charging of onboard batteries. Remote battery switches provide convenient control over battery banks, enhancing operational flexibility. Surface-mounted powerbars serve as centralized distribution points for electrical connections, simplifying wiring and maintenance tasks. As a trusted supplier in the marine industry, Blue Sea Systems offers fast-charging solutions and ignition-protected components like the SI-ACR, ensuring safe and reliable operation. Single-pole components like the L-series, AMG, and MIDI fuses provide essential circuit protection, while wire gauges (AWG) are carefully selected to meet the reliability standards of boating applications For centralized safety and protection, consider integrating a Blue Sea Fuse Block into your setup.
Whether you're upgrading an existing setup or outfitting a new vessel, the inclusion of a Blue Sea Battery Switch ensures dependable power control and long-lasting performance in demanding marine environments.
How do fuse blocks, battery switches and circuit breaker panels enhance the safety and reliability of marine electrical systems?
Fuse blocks, battery switches, and circuit breaker panels significantly enhance the safety and reliability of marine electrical systems by offering structured, protected, and efficient power distribution. Built to endure harsh marine conditions, components from Blue Sea Systems Electrical—such as water-resistant fuse blocks and ignition-protected battery switches—ensure dependable performance over time.
Circuit protection devices like the ST blade fuse and 285-series circuit breaker safeguard against electrical overloads and short circuits, reducing the risk of onboard fires or equipment failure. Products like the 5026 and 6006 circuit breakers are engineered to withstand high loads and corrosive marine environments, while surface-mount fuse blocks and powerbars provide neat, space-saving solutions for circuit management.
These components are often key parts of the Blue Sea Add a Battery system, enabling optimized battery usage and protection. High-amperage ratings (e.g., 150 amps) and advanced features like the 7610 relay and 2104 switch—both ignition-protected—further elevate the safety standards of your vessel's electrical setup, offering peace of mind and operational reliability in any marine scenario.
What are the advantages of using specialty components like solenoid switches, busbar, terminal blocks, chargers and inverter systems in marine applications?
Specialty components like solenoid switches, busbars, terminal blocks, chargers, and inverter systems offer numerous advantages in marine applications, particularly when integrated into a well-designed Marine Wiring system. Solenoid switches enable reliable remote control of high-current circuits, making it easier to manage systems like lighting, pumps, and winches with minimal energy loss.
Heavy-duty solenoid switches are designed to withstand the rigorous demands of marine environments, offering robust performance and longevity. Surface-mount powerbars provide a convenient and organized solution for connecting multiple electrical devices, ensuring efficient power distribution throughout the vessel. With capabilities for fast charge and ignition-protected features, these components deliver reliable power management and safety, enhancing the overall functionality and performance of marine electrical systems.
For additional reliability and organization in your vessel's electrical setup, consider integrating a Blue Sea Terminal Block, ensuring secure and efficient connections in challenging marine environments.